What is the definition of a parallel circuit?

A parallel circuit is defined by the characteristic that electrical components within the circuit share the same voltage across them. In this type of circuit, the components are connected in such a way that each one is independently linked to the voltage source. This means that each component experiences the same voltage, allowing them to operate independently of one another when a voltage is applied. This is crucial because it enables devices in a parallel circuit to function without affecting the others; if one fails or is removed, the rest can still operate normally.

In terms of the other options, current flow in one path describes a series circuit, where there is only one single route for the current to take. Connected in series also pertains specifically to series circuits, where components are connected one after the other. The statement that all components must function for the circuit to complete echoes the fundamental nature of a series circuit, where a break in one component interrupts the entire flow. Thus, the definition of a parallel circuit precisely captures its unique ability to allow various components to share the same voltage while maintaining separate paths for current.